Lamp base



FIG. 1 is a perspective view of a first embodiment of a lamp base showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view of a second embodiment thereof;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a back view of FIG. 8;

FIG. 11 is a right side view of FIG. 8;

FIG. 12 is a left side view of FIG. 8;

FIG. 13 is a top view of FIG. 8; and,

FIG. 14 is a bottom view of FIG. 8.

The broken lines shown in the drawings are included for purposes of illustrating portions of the lamp base and form no part of the claimed design. 

CLAIM The ornamental design for a lamp base, as shown and described. 